1 3 26-15 SUBJECT DATE Main Shaft Speed Sensor March 2015 Additions, Revisions, or Updates Publication Number / Title Platform Section Title Change DDC-SVC-MAN-0140 Transmission Removal of the Main Shaft Speed Sensor Add a figure to point out the cap referred to in step 11. All information subject to change without notice. 3
2 Removal of the Main Shaft Speed Sensor 2 Removal of the Main Shaft Speed Sensor Remove as follows: Special Tools Special tools are required for this procedure. Table 1. 1. Park the vehicle on a level surface, shut down the engine, and set the parking brake. Chock the tires. WARNING: PERSONAL INJURY To avoid injury from hot surfaces, wear protective gloves, or allow engine to cool before removing any component. 2. Disconnect the batteries at the negative post, including the batteries for the auxiliary HVAC, if equipped. NOTE: View from beneath the transmission. 3. Drain the transmission oil. See graphic below for the location of the oil drain plugs. 4 All information subject to change without notice. Copyright 2015 DETROIT DIESEL CORPORATION 3 26-15
Figure 1. Transmission Oil Drain Plugs. 4. Remove the transmission. Refer to section "Removal of the Transmission" NOTE: Be ready to catch the oil pump relief valve as the oil pump cover is removed. 5. Remove capscrews that attach oil pump cover to the transmission housing. All information subject to change without notice. 5
2 Removal of the Main Shaft Speed Sensor Figure 2. Oil Pump Cover. 6. Remove the oil pump relief valve (1). Figure 3. Removing the Oil Pump. 6 All information subject to change without notice. Copyright 2015 DETROIT DIESEL CORPORATION 3 26-15
7. Remove the oil pump drive shaft (3) and the pump rotors. 8. Remove the air fittings connected to the range cylinder (4). Figure 4. Range Cylinder Air Lines. 9. Disconnect the range position sensor (1) and output speed sensor (2) from the transmission wiring harness. 10. Remove the air line (3) and wire harness raceway. NOTICE: The range detent spring is under pressure, and must be held back to prevent the spring from catapulting the shift fork detent spring nut, possibly causing thread damage to the case and potential injury from flying parts. 11. Remove the range shift fork detent spring nut cap(1). As the nut is removed, push in with enough force to prevent the spring from catapulting the nut. All information subject to change without notice. 7
2 Removal of the Main Shaft Speed Sensor 12. Remove the top two bolts on the range housing bolting flange, and install the lifting eye (special tool DDE W 715 589 00 40 00). Figure 5. Lifting Eye (special tool DDE W 715 589 00 40 00) Installed. 13. Attach the lifting device, then remove the remaining fasteners. 14. Install guide pins. 8 All information subject to change without notice. Copyright 2015 DETROIT DIESEL CORPORATION 3 26-15
Figure 6. Guide Pins. 15. Install the kit of three set screws and pushing screws (special tool DDE W 715 589 14 33 00). Turn all three screws in even, incremental steps, to push the housing off the dowel pins. While the housing is being pushed back, the planetary housing flange may tend to bind on the alignment dowels. Take steps to keep the flange parallel to the housing face to ease the removal of the housing. See figure below for pushing screw locations. All information subject to change without notice. 9
2 Removal of the Main Shaft Speed Sensor Figure 7. Pushing Screw Locations. 16. Remove the pushing screws and set screws. 17. Remove the ties from the mainshaft sensor wiring. 18. Disconnect the mainshaft speed sensor harness connector. 10 All information subject to change without notice. Copyright 2015 DETROIT DIESEL CORPORATION 3 26-15
Figure 8. Mainshaft Speed Sensor Connector and Pass-Through. 19. Remove the sensor pass-through capscrews. 20. Remove the sensor. Figure 9. Mainshaft Speed Sensor. All information subject to change without notice. 11